James semplb and wilkinson ceqssley



(No Model.)-

.J. SEMPLE,&1 w. OROSSLEY; Apparatus for Extracting Dyes.

No. 236,265. Patented Jan. 4; 1881.

WM wan/2'4 NVENTOR 2 {a W NESSES ATTORNEYS.

t" PETERS, FMOTO-LITHOGRIi HER. WASHINGTON. 0.0.

Units STATES PATENT Farce,

JAMES SEMPLE AND WILKINSON OBOS SLEY, OF BROAD BROOK, CONN.

APPARATUS FOR EXTRACTlNG DYES.

SPECIFICATION forming part of Letters Patent No. 236,265, dated January 4, 1881.

Application filed August 9, 1880.

To all whom it may concern:

. Be it known that we, JAMES SEMPLE and WILKINSON (JRossLEY, of Broad Brook, in the county of Hartford and State of Connecticut, have invented a new and Improved Apparatus for Extracting Dyes, of which the following is a specification.

The object of this invention is to provide an improved process and apparatus by means of of which dye-stuffs can be more thoroughly leached and the extract be obtained free from dirt, fibers, and other foreign substances.

The invention consists of an upright cylindrical vessel containing horizontal perforated plates for supporting the dye-stuffs, and provided with pipes for introducing steam for boiling and drawing oiithe extract, and for forcing the extract from the vessel, provided, also, with conveniences for introducing the unleached and removing the spent dye-stuff, and with suitable devices for ascertaining and regulatin g the condition of the extracting process.

Figure l is a vertical sectional elevation of the extractor on line 3 3 Fig. 2. Fig. 2 is a cross-section of the same on line :10 m, Fig. 1. Fig. 3 is an enlarged vertical sectional elevation of the discharge pipe and cap.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents a portable cylinder, constructed of boiler-iron or other material capable of withstanding the necessary steam-pressure, supported on legs A A, and having riveted or otherwise secured about its bottom discharge-orifice,'a,ascrew-threaded tube, B, which is closed by a. screw-cap, B, and provided, also, with two man-holes, O C, respectively, through the upper one of which, 0, the dye-stuff is introduced into the cylinder A to be leached, and through the lower one of which, O, the spent dye-stuff is withdrawn.

7 These man-holes O G are tightly closed during the extracting process by ribbed covers D D, that areheld in place by screws; D D passing through the tops of the yokes D D, which are secured to the side of the cylinder A, and the joints between the man-hole flanges and the covers D D are made steam-tight by suitable gaskets b b.

In the top of the cylinder A is a suitable stnffing-box, E, down through which a steam- (No model.)

' pipe, F, is introduced that reaches to or into thetlischarge-orifice a, at the bottom of said cylinder, and is open at its lower end, and has a number of lateral perforations, c 0, near its lower end, for the escape of steam. This pipe F serves the purpose of conveying steam into the cylinder A,for making the dye extract, and of conducting the extract from said cylinder when the dye-stuff is leached; Fixed about this pipe F, below the level of the lower manhole, 0, at suitable distances apart, are two lateral] y-extendin g supportingdisks, F F, and on the same levels with them lugs G G are secured on the inside of the cylinder A. These disks F F and lugs G G are designed to support the circular horizontal perforated platesG G, on the upper one of which the dyestuff is thrown through the man-hole C, while the lower plate G being more finely perforated than the upper one, serves to retain most of the finer particles of dye-stuff that may pass through the perforations in the upper plate .G. These plates G G are constructed in segmental sections, as shown in Fig. 2, that they may readily be removed, through the man-hole G, for cleaning, or so that the inside of the cylinder A may be reached to be cleaned.

Connected with the top of the pipe F by a T-conpling. H, are two pipes, I 1, provided with suitable valves I 1. The pipe I is designed for the introduction of steam into the cylinder A, for extracting the dye, and the pipe 1 being the discharge-pipe for the extract.

A steam-pipe, K, entered into the top of the cylinder A, and provided with a valve, K, serves to conduct the steam under pressure into the cylinder A, whereby the extract is forced from the cylinder A into suitable receiving-kettles for concentration or other treatment. Suitable gage-cocks LL, for ascertaining the quantity of liquid in the cylinders, and a safety-valve, M, are also attached to the cylinder A. I

The process consists in introducing the dyestuft' through the man-hole O,upon the um? We, G, and in introducing a sufficient quantity of water to cover said dye-stuff. Then the man-hole O is closed, and steam is introduced through the pipes I and F into the bottom of the cylinder A, the valve 1 being IOO closed, whereby the water in the cylinder is boiled and the dye extracted from the dyestuli'. By means of a cock, N, near the bottom of the cylinder A, some of the dye extract is drawn off from time to time and its quality determined. \Vhen the leaching has continued for a suflicient time the valve 1 is closed and the valves 1' K opened, and steam under suitable pressure at once introduced, through the pipe K, on the surface of the extract.- within the cylinder A, with the effect of forcing the said extract up through the pipes F and 1 into a receiving kettle or tank. (Not shown.) \Vhen the extract is thus expelled or drawn off the screw-cap B and lower manhole cover, D, are removed and the spent dyestufi' taken from the cylinder A.

In the usual method of extracting dyes the dye-stufl' is suspended in bags of coarse fabric in a kettle of boiling water, and hence the said dye-stuff, being so compacted, does not yield all its dye in the ordinary process, nor does it permit the thorough drawing of the extract from it; and it is found, too, that the extracts produced in this way are contaminated with lint from the bags and dust and dirt from the dye-stuffs, that work into the goods which are dyed. In our process all these objections are overcome, as the dye-stuff is loosely spread and thoroughly exposed to the action of the steam and water, and is thoroughly lixiviated by the steam that forces the extract from the cylinder, while no bags are used to produce lint, and all dust and dirt settle in the discharge-pipe B and the space in the bottom of the cylinder A below the end of the pipe I.

Having thus described our invention, what We claim as new, and desire to secure by Letters Patent, is

1. An improved apparatus for extracting dyes,constructed substantiallyas herein shown and described, consisting of cylinder A. provided with bottom discharge-orifice,a, and tube and cap B B, man-holes U C, with adjustable covers D D, steam-heating and extract-(lischarging pipe F, having connected steam-inlet pipe and discharge-pipe I, perforated sup 'iorting-plates G G, and steam-pressure pipe K, as set forth.

2. In a dye-extractor, the combination,with the cylinder A, of the segmental perforated plates G G, substantially as and for the purpose described.

JAMES SEMPLE. VILKINSON UROSSLEY. Witnesses:

HOMER D. ALLEN, BELLE E. ALLEN. 

